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Home >> Jeep >> 2000 >> Wrangler Sport, Standard >> Repair and Diagnosis (Single Page) >> Transmission >> Manual Trans >> Removal & Installation & Overhaul - NV3550 Manual Transmission >> Manual - NV3550 >> Disassembly >> Front Housing

Front Housing

  1. Shift transmission into Neutral.
  2. Remove drain plug and drain lubricant.
  3. Inspect drain plug magnet for debris.
  4. Remove backup light switch. Switch is located on passenger side of rear housing (see Fig 1).
    Fig 1: Backup Light Switch
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  5. Remove shift tower bolts and remove tower and lever assembly (see Fig 2).
    Fig 2: Shift Tower
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  6. Remove shift shaft lock bolt (see Fig 3) located on top of the housing just forward of shift tower.
    Fig 3: Shift Shaft Lock Bolt
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  7. Remove shift shaft detent plug with Remover 8117A. Attach the fingers of the remover to the detent plug (see Fig 4). Then push the cup down till it contacts the trans. Tighten the nut (see Fig 5) till it pulls the plug from the transmission case.
    Fig 4: Detent Plug Remover
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    Fig 5: Pulling Detent Plug
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  8. Remove shift shaft detent plunger and spring (see Fig 6). Remove spring and plunger with a pencil magnet.
    Fig 6: Detent Plunger & Spring
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  9. Remove bolts attaching input shaft bearing retainer to front housing and remove retainer.
    NOTE: Use pry tool to carefully lift retainer and break sealer bead (see Fig 7).
    Fig 7: Loosening Bearing Retainer
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  10. Remove bearing retainer from input shaft (see Fig 8).
    Fig 8: Input Shaft Bearing Retainer
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  11. Remove snap ring that secures input shaft in front bearing (see Fig 9).
    Fig 9: Input Shaft Snap Ring
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  12. Remove bolts that attach front housing to rear housing (see Fig 10). Three bolts at extreme rear of housing are actually for the output shaft bearing retainer. It is not necessary to remove all three bolts at this time. Leave at least one bolt in place until geartrain is ready to be removed from case.
    Fig 10: Housing And Bearing Retainer Bolts
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  13. Separate front housing from rear housing (see Fig 11). With a plastic mallet tap the front housing off the alignment dowels.
    Fig 11: Separating Front Housing From Rear Housing
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  14. Remove and inspect input shaft bearing and countershaft front bearing race (see Fig 12).
    Fig 12: Input Shaft Bearing & Countershaft Front Bearing Race
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  15. Remove screw from reverse blocker and remove blocker (see Fig 13) from case.
    Fig 13: Reverse Blocker
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  16. Note position of input shaft, shift shaft and forks, and geartrain components in housing (see Fig 14).
    Fig 14: Geartrain And Shift Components
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